Take the headset out of the charging case; it will turn on automatically. Alternatively, press and hold the MFB (Multifunction Button) for about 3 seconds until the blue light flashes. Pairing Mode:
: Avoid using or storing the headset in temperatures below 10°C (50°F) or above 60°C (140°F) . yyk525 user manual exclusive
Now, power on your YYK525. Watch the OLED flicker to life. You are ready. Take the headset out of the charging case;
Your YYK525 contains a that degrades with electromagnetic exposure. The standard manual never mentions this. To maintain peak performance, follow this exclusive 90-day maintenance cycle: it will turn on automatically. Alternatively
The official trouble-shooting guide covers "No power" and "No signal." This exclusive section covers the errors that the manufacturer won’t explain.